<?php
echo 153432329, "\n";//十进制整数，可以用下划线分组
echo 032,"\n";//以0开头，后边是0-7,8进制整数
echo 0o33,"\n";//以0o开头，后边是0-7,8进制整数
echo 0b1101,"\n";//以0b开头，后边是0-1,2进制整数
echo 0x49A,"\n";//以0x开头，后边是0-9A-F,16进制整数,所有字母都不区分大小写
//算数运算符
echo 8/5,"\n";
echo intdiv(8,5),"\n";//只有整数部分
echo 8%5,"\n";//两个整数相除取余数
echo @(8.1 % 5.9),"\n";//两个整数相除取余数，@用于抑制警告信息
echo (int)8.1 % (int)5.9,"\n";//两个整数相除取余数，明确强制类型转换
echo fmod(8.6,5),"\n";//
echo 2 ** 3 ,"\n";//2的3次方
